Chem. Commun.

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Selective colorimetric NO(g) detection based on the use of modified gold nanoparticles using click chemistry

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3077-3079
DOI: 10.1039/C4CC10149A, CommunicationAlmudena Marti, Ana M. Costero, Pablo Gavina, Margarita Parra
A new colorimetric probe for the detection of NO(g) based on the use of functionalized gold nanoparticles is described. The sensing protocol is based on a click reaction catalized by Cu(I) which is generated in situ from the reduction of Cu(II) by NO(g).
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Regioselective oxidative Pd-catalysed coupling of alkylboronic acids with pyridin-2-yl-substituted heterocycles

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3166-3168
DOI: 10.1039/C4CC10144H, CommunicationJulian Wippich, Ingo Schnapperelle, Thorsten Bach
A total of 19 alkylated heterocycles (thiophenes, benzo-thiophenes, pyrroles, furans) were prepared (36-99% yield) from the respective pyridin-2-yl-substituted precursors employing alkylboronic acids as the alkylating reagents in an oxidative (Ag2CO3 and 2,6-dimethyl-1,4-benzoquinone as oxidants) Pd-catalysed coupling reaction.
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Ultrafast liquid water transport through graphene-based nanochannels measured by isotope labelling

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3251-3254
DOI: 10.1039/C4CC10103K, CommunicationPengzhan Sun, He Liu, Kunlin Wang, Minlin Zhong, Dehai Wu, Hongwei Zhu
Liquid water can afford an ultrafast permeation through graphene-based nanochannels under no external hydrostatic pressure.
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Ultra high-resolution HSQC: application to the efficient and accurate measurement of heteronuclear coupling constants

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3262-3265
DOI: 10.1039/C4CC10279G, CommunicationNuria Marco, Andre Fredi, Teodor Parella
A rapid acquisition strategy in terms of enhanced resolution per time unit for the simple and efficient determination of multiple coupling constants is proposed. The use of 13C spectral aliasing combined with pure shift NMR techniques allows accurate measurements of the magnitude and the sign from ultra high resolved 2D cross-peaks.
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Electronic structures and electronic spectra of all-boron fullerene B40

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3185-3188
DOI: 10.1039/C4CC09151E, CommunicationRongxing He, Xiao Cheng Zeng
This study is motivated by the recent discovery of the first all-boron fullerene analogue, a B40 cluster with D2d point-group symmetry, dubbed borospherene (Nat. Chem., 2014, 6, 727).
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Examination of mercaptobenzyl sulfonates as catalysts for native chemical ligation: application to the assembly of a glycosylated Glucagon-Like Peptide 1 (GLP-1) analogue

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3208-3210
DOI: 10.1039/C4CC09502B, CommunicationBen Cowper, Tsz Mei Sze, Bhavesh Premdjee, Aileen F. Bongat White, Andrew Hacking, Derek Macmillan
3/4-Mercaptobenzyl sulfonates were investigated as aryl thiol catalysts for native chemical ligation (NCL).
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Synthesis of colloidal Janus nanoparticles by asymmetric capping of mesoporous silica with phenylsilsesquioxane

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3211-3214
DOI: 10.1039/C4CC10064F, CommunicationHiroto Ujiie, Atsushi Shimojima, Kazuyuki Kuroda
Janus-type mesoporous silica nanoparticles asymmetrically capped with non-porous phenylsilsesquioxane have been prepared by simply adding phenyltriethoxysilane to an aqueous dispersion of mesostructured silica-surfactant composite nanoparticles.
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Surface enhanced vibrational spectroscopic evidence for an alternative DNA-independent redox activation of endonuclease III

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3255-3257
DOI: 10.1039/C4CC09498K, CommunicationElin Moe, Murat Sezer, Peter Hildebrandt, Smilja Todorovic
Redox activation of the [4Fe-4S] cluster in DNA repair enzyme endonuclease III does not exclusively rely on interaction with DNA.
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Pd-catalyzed [small alpha]-selective C(sp3)-H acetoxylation of amides through an unusual cyclopalladation mechanism

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3219-3222
DOI: 10.1039/C4CC09576F, CommunicationMeining Wang, Yang Yang, Zhoulong Fan, Zhen Cheng, Weiliang Zhu, Ao Zhang
A novel Pd-catalyzed site-selective [small alpha]-C(sp3)-H oxidation/acetoxylation of amides through an unusual [4,6]-bicyclic metallacycle intermediate was reported with 1-aminoanthraquinone as a new BDG.
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A naphthalimide-based fluorescent probe for highly selective detection of histidine in aqueous solution and its application in in vivo imaging

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3143-3146
DOI: 10.1039/C4CC09488C, CommunicationHio-Ieng Un, Shuai Wu, Chang-Bo Huang, Zheng Xu, Lin Xu
A naphthalimide-based fluorescent probe for selectively detecting His in aqueous solution, living cells, and C. elegans has been developed.
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Superior electrocatalytic activity from nanodendritic structure consisting of a PtFe bimetallic core and Pt shell

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3215-3218
DOI: 10.1039/C4CC09528F, CommunicationJianbing Zhu, Meiling Xiao, Kui Li, Changpeng Liu, Wei Xing
A novel PtFe@Pt core-shell nanostructure with a PtFe bimetallic core and a nanodendrite Pt shell was fabricated through a facile aqueous reduction process.
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Expedient synthesis of 3-phenylbicyclo[1.1.1]pentan-1-amine via metal-free homolytic aromatic alkylation of benzene

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3139-3142
DOI: 10.1039/C4CC09655J, CommunicationNavanita T. Thirumoorthi, Chew Jia Shen, Vikrant A. Adsool
The inquisitiveness on the use of the BCP motif as a modern lead optimization tactic entails reliable synthetic access. In that direction, we disclose a new and versatile approach to 3-phenylbicyclo[1.1.1]pentan-1-amine, via metal-free homolytic alkylation of benzene.
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(E)-[small alpha],[small beta]-unsaturated amides from tertiary amines, olefins and CO via Pd/Cu-catalyzed aerobic oxidative N-dealkylation

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3247-3250
DOI: 10.1039/C4CC08925A, CommunicationRenyi Shi, Hua Zhang, Lijun Lu, Pei Gan, Yuchen Sha, Heng Zhang, Qiang Liu, Matthias Beller, Aiwen Lei
A novel Pd/Cu-catalyzed chemoselective aerobic oxidative N-dealkylation/carbonylation reaction has been developed for the efficient and straightforward construction of synthetically useful and bioactive (E)-[small alpha],[small beta]-unsaturated amide derivatives.
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Cucurbit[8]uril templated supramolecular ring structure formation and protein assembly modulation

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3147-3150
DOI: 10.1039/C4CC08917K, CommunicationMellany Ramaekers, Sjors P. W. Wijnands, Joost L. J. van Dongen, Luc Brunsveld, Patricia Y. W. Dankers
A multicomponent host-guest system composed of synthetic small molecules as guests in a supramolecular host shows efficient protein dimerization inhibition.
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Graphite sulphate - a precursor to graphene

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3162-3165
DOI: 10.1039/C4CC09381J, CommunicationSiegfried Eigler
Graphite sulphate is utilized as a precursor to single layers of graphene with an average density of defects of 0.06%.
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Differential reactivity of the inner and outer positions of Au25(SCH2CH2Ph)18 dimeric staples under place exchange conditions

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3204-3207
DOI: 10.1039/C4CC09252J, CommunicationPaolo Pengo, Cristian Bazzo, Mariangela Boccalon, Lucia Pasquato
The site selectivity of the place exchange reaction at the two inequivalent positions of the neutral Au25(SCH2CH2Ph)18 staples depends on the nature of the incoming thiol.
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Photo-responsive reversible assembly of gold nanoparticles coated with pillar[5]arenes

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3124-3126
DOI: 10.1039/C4CC09778E, CommunicationQizhong Zhou, Bin Zhang, Deman Han, Rener Chen, Fangli Qiu, Jiashou Wu, Hujiang Jiang
Gold nanoparticles stabilized by sulfhydryl functionalized pillar[5]arenes were successfully prepared. When they complex with anthracene derivatives on their surfaces, they can reversibly aggregate and disassemble based on photocycloaddition of anthracene.
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On-surface self-organization of a robust metal-organic cluster based on copper(I) with chloride and organosulphur ligands

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3243-3246
DOI: 10.1039/C4CC08471C, CommunicationGonzalo Otero-Irurueta, Irene Hernandez-Rodriguez, Jose I. Martinez, Rogger Palacios-Rivera, Francisco J. Palomares, Maria F. Lopez, Almudena I. Gallego, Salome Delgado, Felix Zamora, Javier Mendez, Jose A. Martin-Gago
Vacuum sublimation of a metal-organic cluster leading to supramolecular wires on surfaces.
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Ratiometric fluorescence and mesoporous structure dual signal amplification for sensitive and selective detection of TNT based on MIP@QD fluorescence sensors

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3200-3203
DOI: 10.1039/C4CC09766A, CommunicationShoufang Xu, Hongzhi Lu
MIP@QD fluorescence sensors combined with ratiometric fluorescence techniques and mesoporous silica materials for highly sensitive detection of TNT.
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Stacking interactions by two Phe side chains stabilize and orient assemblies of even the minimal amphiphilic [small beta]-sheet motif

7 February, 2015 - 17:54

Chem. Commun., 2015, 51,3154-3157
DOI: 10.1039/C4CC09673H, CommunicationZarzhitsky Shlomo, T. P. Vinod, Raz Jelinek, Hanna Rapaport
Here we demonstrate that the smallest possible motif of the amphiphilic and pleated [small beta]-strand structure can be generated using tri-peptides stabilized by [small pi]-[small pi] stacking interactions.
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